Police said that the day's deadliest attack struck Muqdadiyah, when two explosions targeting the home of a soldier killed him, his wife, his two daughters and two sons as they slept. The blasts levelled the home.

Muqdadiyah is about 90 kilometres (60 miles) north of Baghdad.

In Baghdad, a car bomb exploded in a commercial street in the capital's western neighbourhood of Amariyah, killing four people and wounding 12, police said. Another bomb blast near an outdoor market in the Sadiyah neighbourhood killed two shoppers and wounded six, officials said.

Elsewhere, a car bomb exploded near homes in a Turkomen neighbourhood in the town of Tuz Khormato, killing three people and wounding five, Mayor Shalal Abdoul said.

Tuz Khormato, an ethnically mixed city of Arabs, Kurds and ethnic Turkomen, is 210 kilometres (130 miles) north of Baghdad.

Hospital officials confirmed the casualties for all attacks.

No one immediately claimed responsibility for Saturday's attacks. But multiple bombings against civilians and security forces are frequently the work of the al Qaida affiliate in Iraq, which has been emboldened by successes of its fellow militants in the civil war next door in Syria and by widespread Sunni anger at the Shiite-led government.

Since late December, members of Iraq's al Qaida branch - known as the Islamic State of Iraq and the Levant - have taken over parts of Ramadi, the capital of the largely Sunni province of Anbar. They also control the centre of the nearby city of Fallujah.